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Polymer electrolytes based on protic ionic liquids with perfluorinated anions for safe lithium-ion batteries

TitlePolymer electrolytes based on protic ionic liquids with perfluorinated anions for safe lithium-ion batteries
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2024
AuthorsSouza, Giselle de Araujo, di Pietro Maria Enrica, Castiglione Franca, Martinez Patricia Fazzio Mar, Fraenza Carla Cecilia, Stallworth Phillip, Greenbaum Steven, Triolo Alessandro, Appetecchi Giovanni Battista, and Mele Andrea
JournalElectrochimica Acta
Type of ArticleArticle
KeywordsCPMAS, Diffusion NMR, DSC, Energy storage, Esters, Ionic liquids, Ions, Lithium-ion batteries, Nuclear magnetic resonance spectroscopy, poly(methyl methacrylate), Poly-methyl methacrylates, Polyelectrolytes, Polymer electrolyte, Polymeric systems, Protic ionic liquids, TGA, Thermoanalysis

The quest for safe and high-performance polymer electrolytes in lithium-ion batteries (LIBs) has led researchers to explore protic ionic liquids (PILs) as potential candidates to be entrapped in polymer matrices. In this context, we present an investigation into solid polymeric systems based on poly(methyl methacrylate) (PMMA) as a host for PILs, featuring 1,8-diazabicyclo-[5,4,0]-undec-7-ene (DBU) cation paired with three different anions: bis(trifluoromethanesulfonyl)imide (TFSI−), trifluoromethanesulfonate (TFO−), and (trifluoromethanesulfonyl-nonafluorobutylsulfonyl)imide (IM14−). Additionally, we explore the lithium-doped IM14-gel-like system to broaden our understanding of these intriguing materials. Through comprehensive thermal analysis, solid-state NMR, and diffusion NMR techniques, we delve into the interactions and structural features of these binary and ternary polymeric systems. Our investigation reveals unique dynamics and ion interactions within the PMMA matrix, shedding light on the potential of these materials for advanced energy storage technologies. Particularly, we highlight the distinctive features of DBUH-IM14 and its specific interaction with the polymeric matrix and the lithium ions, underscoring its significance in advancing safer and more efficient energy storage devices. © 2023 Elsevier Ltd


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Citation Keyde Araujo Lima e Souza2024